Medical and food grade TALC powder

Physical and chemical properties:

Physical and chemical properties	Superior grade	Top grade	Qualified product
Appearance	Odorless, tasteless, sandless particles, a sense of lubrication
Whiteness (%)	≥90	≥88	≥85
Fineness, 325 mesh(45μm)	≥98
Moisture (%)	≤0.5
Ferric salt	Does not immediately appear blue
Water insolubles (%)	≤0.1
Substance soluble in acid(%)	≤1.5
Loss on ignition(800°C)(%)	≤5.0
PH value	Litmus paper showed a neutral reaction
As	≤3×10-4
Pb	≤10×10-4
Total bacterial count /g	<500
Mould /g	<100
Escherichia coli, Staphylococcus, Pseudomonas aeruginosa	not detectable